An isolated infarction of cerebellar nodulus (lobule X)

Abstract

Cerebellar nodulus (lobule X) is an anterior and inferior structure of the vermis and is the epicenter of flocculonodular lobe (vestibulocerebellum). Nodulus coordinates with the vestibular nuclei through afferent Mossy and efferent Purkinje fibers and plays a pivotal role in maintaining balance and is responsible for vestibulo‑ocular reflex. Any lesion disrupting these fiber tracts impairs the person’s ability to control ocular movements during head tilting and posture while standing and walking. Isolated infarction of nodulus is extremely rare with only few cases been reported earlier. In this article, the authors present a case of an elderly female with severe giddiness and cerebellar signs and were diagnosed to have an isolated cerebellar nodulus infarction on imaging studies. Conservative management to which our patient responded well is also discussed.